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Old 02-08-2011, 08:17 PM
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still leaking oil

i have a 2004 rubicon with just under 95,000 miles. discovered oil stains in my driveway, and hit all the jeep forums. figured it was my rear main seal, due to the location of the leak. changed the rear main seal like described in the threads, numerous other 'how to' websites and the haynes manual. i am 100% positive that the new rear main seal was not damaged when installed.

leak still remains!!! same leak as before the repair, nothing has changed.

can someone with some smarts please advise?
thanks.

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Old 02-08-2011, 08:23 PM   #2
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Welcome to the forum.

I am having the same issue as you. I have noticed there was a oil leaking from the valve cover closet to the firewall. I replaced the gasket and cleaned/sprayed the area with some brake cleaner. I still see some leak from the area but not as much. I just think there could be some residual oil from the valve cover leaked before and just take time for it dry out.

Check your valve cover especially near the firewall.

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Old 02-08-2011, 08:25 PM   #3
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Is it a bad leak? Cuz I have an 04 rubicon and from what I can tell it's rather common for a really insignificant leak an just about all early 2000 TJ's. no sweat, but if it's serious leak then you'll need morre expert advice than mine.
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Old 02-08-2011, 08:32 PM   #4
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Was the rear main seal leaking in the first place? I would not recommend changing seals that are not leaking. Before changing seals you may wish to clean the area with brake cleaner and compressed air. You may learn that what appears to be a leaky rear main seal, is none other than a leaky valve cover gasket. Sometimes oil will run quite a ways before it hits your driveway. See if you cannot determine where the leak is first...
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Old 02-09-2011, 12:17 PM
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thanx for your replies...
checked the valve cover, no leak. it's def' dripping from the gap between the bell housing and the cover plate. i sprayed it with brake cleaner in hopes that it could be residue from before i changed the main seal, but nope, still leaking.

if anyone has an idea of what else could be causing this leak, please help.
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Old 02-09-2011, 12:26 PM   #6
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As CapnDean asked....Was there evidence that the rear main was leaking when you changed it?

How did the back of the oil pan gasket look when you had the trans out?


Edit:

As I recall hearing somewhere once. "Jeeps don't leak, they mark their territory."
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Old 02-09-2011, 12:36 PM   #7
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Many shops and garages can add UV dye to the oil system, then you come back in a couple days and they will hit it with a black light. It becomes very obvious from the glowing trail exactly where it is coming from. I have seen UV kits on the shelf at Autozone. It also works for the trans and cooling systyem for finding leaks.
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Old 02-09-2011, 12:40 PM   #8
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They do like to mark their territory.
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Old 02-09-2011, 12:42 PM
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the only evidence was the leak i described before. there was no need to pull the trans out...rear main seal is on the crank shaft. the rubber on the old seal was stiff, but besides that there was no real evidence of anything wrong with it. the oil pan gasket was fine, i replaced it with a new one, but there was nothing 'wrong' with it, no leak or tears.

lol on your comment...
As I recall hearing somewhere once. "Jeeps don't leak, they mark their territory."
mine is def' marking everything.
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Old 02-09-2011, 12:43 PM
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thanks neal, i'll give it a try
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Old 02-09-2011, 12:43 PM   #11
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Did you torque the oil pan bolts to correct torque? Seems like I have heard they are touchy about how much torque they have on them.
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Old 02-09-2011, 12:45 PM
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yup. i pretty much followed the haynes manual and everything else i found on the subject to spec

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